Excessive bleach consumption

[brent.roberts]

A couple of points to think about.

If you're using an Aquabot you might be getting lazy about the backwash and have a lot of organic debris in the sand filter. I can see that coming on my pattern and I've only had the Dolphin about 10 days. Junk in the filter or in the Aquabot or in the pool itself is all the same to the chlorine. It will get consumed trying to oxodize it.

Also there is a chance that the chlorine has lost a lot of it kick before you put it in the pool. I'm sure if you played with numbers you could put a few drops of your bleach in a gallon of distilled water or something to see if it was really still 6% by the time you get it home to put it in the pool. Maybe just try a different source. (just noticed the comments about Clorox ... good move )

When you do your nightly additions of Cl. to get it to 15, I'd leave it an hour and then add another gallon before I hit the sack. If you're just touching your break point at 15, one hour after you got there you will be below the break point already..add some more ..and leave the pump running all night.